3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "libavutil/avassert.h"
29 #include "libavutil/avstring.h"
30 #include "libavutil/channel_layout.h"
31 #include "libavutil/crc.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/pixdesc.h"
34 #include "libavutil/imgutils.h"
35 #include "libavutil/samplefmt.h"
36 #include "libavutil/dict.h"
37 #include "libavutil/avassert.h"
40 #include "libavutil/opt.h"
42 #include "frame_thread_encoder.h"
44 #include "bytestream.h"
50 volatile int ff_avcodec_locked;
51 static int volatile entangled_thread_counter = 0;
52 static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
53 static void *codec_mutex;
54 static void *avformat_mutex;
56 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
61 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
63 ptr = av_realloc(ptr, min_size);
64 /* we could set this to the unmodified min_size but this is safer
65 * if the user lost the ptr and uses NULL now
75 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
80 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
82 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
89 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
91 ff_fast_malloc(ptr, size, min_size, 0);
94 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
97 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
102 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
103 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
106 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
109 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
114 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
115 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
118 /* encoder management */
119 static AVCodec *first_avcodec = NULL;
121 AVCodec *av_codec_next(const AVCodec *c)
126 return first_avcodec;
129 static void avcodec_init(void)
131 static int initialized = 0;
133 if (initialized != 0)
137 ff_dsputil_static_init();
140 int av_codec_is_encoder(const AVCodec *codec)
142 return codec && (codec->encode_sub || codec->encode2);
145 int av_codec_is_decoder(const AVCodec *codec)
147 return codec && codec->decode;
150 void avcodec_register(AVCodec *codec)
160 if (codec->init_static_data)
161 codec->init_static_data(codec);
164 unsigned avcodec_get_edge_width(void)
169 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
171 s->coded_width = width;
172 s->coded_height = height;
173 s->width = -((-width ) >> s->lowres);
174 s->height = -((-height) >> s->lowres);
177 #define INTERNAL_BUFFER_SIZE (32 + 1)
179 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
180 int linesize_align[AV_NUM_DATA_POINTERS])
186 switch (s->pix_fmt) {
187 case AV_PIX_FMT_YUV420P:
188 case AV_PIX_FMT_YUYV422:
189 case AV_PIX_FMT_UYVY422:
190 case AV_PIX_FMT_YUV422P:
191 case AV_PIX_FMT_YUV440P:
192 case AV_PIX_FMT_YUV444P:
193 case AV_PIX_FMT_GBRP:
194 case AV_PIX_FMT_GRAY8:
195 case AV_PIX_FMT_GRAY16BE:
196 case AV_PIX_FMT_GRAY16LE:
197 case AV_PIX_FMT_YUVJ420P:
198 case AV_PIX_FMT_YUVJ422P:
199 case AV_PIX_FMT_YUVJ440P:
200 case AV_PIX_FMT_YUVJ444P:
201 case AV_PIX_FMT_YUVA420P:
202 case AV_PIX_FMT_YUVA422P:
203 case AV_PIX_FMT_YUVA444P:
204 case AV_PIX_FMT_YUV420P9LE:
205 case AV_PIX_FMT_YUV420P9BE:
206 case AV_PIX_FMT_YUV420P10LE:
207 case AV_PIX_FMT_YUV420P10BE:
208 case AV_PIX_FMT_YUV420P12LE:
209 case AV_PIX_FMT_YUV420P12BE:
210 case AV_PIX_FMT_YUV420P14LE:
211 case AV_PIX_FMT_YUV420P14BE:
212 case AV_PIX_FMT_YUV422P9LE:
213 case AV_PIX_FMT_YUV422P9BE:
214 case AV_PIX_FMT_YUV422P10LE:
215 case AV_PIX_FMT_YUV422P10BE:
216 case AV_PIX_FMT_YUV422P12LE:
217 case AV_PIX_FMT_YUV422P12BE:
218 case AV_PIX_FMT_YUV422P14LE:
219 case AV_PIX_FMT_YUV422P14BE:
220 case AV_PIX_FMT_YUV444P9LE:
221 case AV_PIX_FMT_YUV444P9BE:
222 case AV_PIX_FMT_YUV444P10LE:
223 case AV_PIX_FMT_YUV444P10BE:
224 case AV_PIX_FMT_YUV444P12LE:
225 case AV_PIX_FMT_YUV444P12BE:
226 case AV_PIX_FMT_YUV444P14LE:
227 case AV_PIX_FMT_YUV444P14BE:
228 case AV_PIX_FMT_GBRP9LE:
229 case AV_PIX_FMT_GBRP9BE:
230 case AV_PIX_FMT_GBRP10LE:
231 case AV_PIX_FMT_GBRP10BE:
232 case AV_PIX_FMT_GBRP12LE:
233 case AV_PIX_FMT_GBRP12BE:
234 case AV_PIX_FMT_GBRP14LE:
235 case AV_PIX_FMT_GBRP14BE:
236 w_align = 16; //FIXME assume 16 pixel per macroblock
237 h_align = 16 * 2; // interlaced needs 2 macroblocks height
239 case AV_PIX_FMT_YUV411P:
240 case AV_PIX_FMT_UYYVYY411:
244 case AV_PIX_FMT_YUV410P:
245 if (s->codec_id == AV_CODEC_ID_SVQ1) {
250 case AV_PIX_FMT_RGB555:
251 if (s->codec_id == AV_CODEC_ID_RPZA) {
256 case AV_PIX_FMT_PAL8:
257 case AV_PIX_FMT_BGR8:
258 case AV_PIX_FMT_RGB8:
259 if (s->codec_id == AV_CODEC_ID_SMC) {
264 case AV_PIX_FMT_BGR24:
265 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
266 (s->codec_id == AV_CODEC_ID_ZLIB)) {
277 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
278 w_align = FFMAX(w_align, 8);
281 *width = FFALIGN(*width, w_align);
282 *height = FFALIGN(*height, h_align);
283 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
284 // some of the optimized chroma MC reads one line too much
285 // which is also done in mpeg decoders with lowres > 0
288 for (i = 0; i < 4; i++)
289 linesize_align[i] = STRIDE_ALIGN;
292 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
294 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
295 int chroma_shift = desc->log2_chroma_w;
296 int linesize_align[AV_NUM_DATA_POINTERS];
299 avcodec_align_dimensions2(s, width, height, linesize_align);
300 align = FFMAX(linesize_align[0], linesize_align[3]);
301 linesize_align[1] <<= chroma_shift;
302 linesize_align[2] <<= chroma_shift;
303 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
304 *width = FFALIGN(*width, align);
307 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
308 enum AVSampleFormat sample_fmt, const uint8_t *buf,
309 int buf_size, int align)
311 int ch, planar, needed_size, ret = 0;
313 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
314 frame->nb_samples, sample_fmt,
316 if (buf_size < needed_size)
317 return AVERROR(EINVAL);
319 planar = av_sample_fmt_is_planar(sample_fmt);
320 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
321 if (!(frame->extended_data = av_mallocz(nb_channels *
322 sizeof(*frame->extended_data))))
323 return AVERROR(ENOMEM);
325 frame->extended_data = frame->data;
328 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
329 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
330 sample_fmt, align)) < 0) {
331 if (frame->extended_data != frame->data)
332 av_freep(&frame->extended_data);
335 if (frame->extended_data != frame->data) {
336 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
337 frame->data[ch] = frame->extended_data[ch];
343 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
345 AVCodecInternal *avci = avctx->internal;
348 av_freep(&avci->audio_data);
349 buf_size = av_samples_get_buffer_size(NULL, avctx->channels,
350 frame->nb_samples, avctx->sample_fmt,
353 return AVERROR(EINVAL);
355 frame->data[0] = av_mallocz(buf_size);
357 return AVERROR(ENOMEM);
359 ret = avcodec_fill_audio_frame(frame, avctx->channels, avctx->sample_fmt,
360 frame->data[0], buf_size, 0);
362 av_freep(&frame->data[0]);
366 avci->audio_data = frame->data[0];
367 if (avctx->debug & FF_DEBUG_BUFFERS)
368 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, "
369 "internal audio buffer used\n", frame);
374 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
380 AVCodecInternal *avci = s->internal;
382 if (pic->data[0] != NULL) {
383 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
386 if (avci->buffer_count >= INTERNAL_BUFFER_SIZE) {
387 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n");
391 if (av_image_check_size(w, h, 0, s) || s->pix_fmt<0) {
392 av_log(s, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
397 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE + 1) *
398 sizeof(InternalBuffer));
401 buf = &avci->buffer[avci->buffer_count];
403 if (buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)) {
404 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
405 av_freep(&buf->base[i]);
411 int h_chroma_shift, v_chroma_shift;
416 int stride_align[AV_NUM_DATA_POINTERS];
417 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
418 const int pixel_size = desc->comp[0].step_minus1 + 1;
420 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift,
423 avcodec_align_dimensions2(s, &w, &h, stride_align);
425 if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
431 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
432 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
433 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
434 // increase alignment of w for next try (rhs gives the lowest bit set in w)
438 for (i = 0; i < 4; i++)
439 unaligned |= picture.linesize[i] % stride_align[i];
442 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
446 for (i = 0; i < 3 && picture.data[i + 1]; i++)
447 size[i] = picture.data[i + 1] - picture.data[i];
448 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
450 memset(buf->base, 0, sizeof(buf->base));
451 memset(buf->data, 0, sizeof(buf->data));
453 for (i = 0; i < 4 && size[i]; i++) {
454 const int h_shift = i == 0 ? 0 : h_chroma_shift;
455 const int v_shift = i == 0 ? 0 : v_chroma_shift;
457 buf->linesize[i] = picture.linesize[i];
459 buf->base[i] = av_malloc(size[i] + 16); //FIXME 16
460 if (buf->base[i] == NULL)
461 return AVERROR(ENOMEM);
462 memset(buf->base[i], 128, size[i]);
464 // no edge if EDGE EMU or not planar YUV
465 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !size[2])
466 buf->data[i] = buf->base[i];
468 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i] * EDGE_WIDTH >> v_shift) + (pixel_size * EDGE_WIDTH >> h_shift), stride_align[i]);
470 for (; i < AV_NUM_DATA_POINTERS; i++) {
471 buf->base[i] = buf->data[i] = NULL;
472 buf->linesize[i] = 0;
474 if (size[1] && !size[2])
475 avpriv_set_systematic_pal2((uint32_t *)buf->data[1], s->pix_fmt);
476 buf->width = s->width;
477 buf->height = s->height;
478 buf->pix_fmt = s->pix_fmt;
481 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
482 pic->base[i] = buf->base[i];
483 pic->data[i] = buf->data[i];
484 pic->linesize[i] = buf->linesize[i];
486 pic->extended_data = pic->data;
487 avci->buffer_count++;
489 if (s->debug & FF_DEBUG_BUFFERS)
490 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
491 "buffers used\n", pic, avci->buffer_count);
496 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
498 frame->type = FF_BUFFER_TYPE_INTERNAL;
499 switch (avctx->codec_type) {
500 case AVMEDIA_TYPE_VIDEO:
501 return video_get_buffer(avctx, frame);
502 case AVMEDIA_TYPE_AUDIO:
503 return audio_get_buffer(avctx, frame);
509 void ff_init_buffer_info(AVCodecContext *s, AVFrame *frame)
512 frame->pkt_pts = s->pkt->pts;
513 frame->pkt_pos = s->pkt->pos;
514 frame->pkt_duration = s->pkt->duration;
515 frame->pkt_size = s->pkt->size;
517 frame->pkt_pts = AV_NOPTS_VALUE;
519 frame->pkt_duration = 0;
520 frame->pkt_size = -1;
522 frame->reordered_opaque = s->reordered_opaque;
524 switch (s->codec->type) {
525 case AVMEDIA_TYPE_VIDEO:
526 frame->width = s->width;
527 frame->height = s->height;
528 frame->format = s->pix_fmt;
529 frame->sample_aspect_ratio = s->sample_aspect_ratio;
531 case AVMEDIA_TYPE_AUDIO:
532 frame->sample_rate = s->sample_rate;
533 frame->format = s->sample_fmt;
534 frame->channel_layout = s->channel_layout;
535 frame->channels = s->channels;
540 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame)
542 ff_init_buffer_info(avctx, frame);
544 return avctx->get_buffer(avctx, frame);
547 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
550 InternalBuffer *buf, *last;
551 AVCodecInternal *avci = s->internal;
553 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
555 assert(pic->type == FF_BUFFER_TYPE_INTERNAL);
556 assert(avci->buffer_count);
559 buf = NULL; /* avoids warning */
560 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
561 buf = &avci->buffer[i];
562 if (buf->data[0] == pic->data[0])
565 av_assert0(i < avci->buffer_count);
566 avci->buffer_count--;
567 last = &avci->buffer[avci->buffer_count];
570 FFSWAP(InternalBuffer, *buf, *last);
573 for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
575 // pic->base[i]=NULL;
577 if (s->debug & FF_DEBUG_BUFFERS)
578 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
579 "buffers used\n", pic, avci->buffer_count);
582 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
587 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
589 if (pic->data[0] && (pic->width != s->width || pic->height != s->height || pic->format != s->pix_fmt)) {
590 av_log(s, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
591 pic->width, pic->height, av_get_pix_fmt_name(pic->format), s->width, s->height, av_get_pix_fmt_name(s->pix_fmt));
592 s->release_buffer(s, pic);
595 ff_init_buffer_info(s, pic);
597 /* If no picture return a new buffer */
598 if (pic->data[0] == NULL) {
599 /* We will copy from buffer, so must be readable */
600 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
601 return ff_get_buffer(s, pic);
604 assert(s->pix_fmt == pic->format);
606 /* If internal buffer type return the same buffer */
607 if (pic->type == FF_BUFFER_TYPE_INTERNAL) {
612 * Not internal type and reget_buffer not overridden, emulate cr buffer
615 for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
616 pic->data[i] = pic->base[i] = NULL;
618 /* Allocate new frame */
619 if ((ret = ff_get_buffer(s, pic)))
621 /* Copy image data from old buffer to new buffer */
622 av_picture_copy((AVPicture *)pic, (AVPicture *)&temp_pic, s->pix_fmt, s->width,
624 s->release_buffer(s, &temp_pic); // Release old frame
628 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
632 for (i = 0; i < count; i++) {
633 int r = func(c, (char *)arg + i * size);
640 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
644 for (i = 0; i < count; i++) {
645 int r = func(c, arg, i, 0);
652 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
654 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
655 return desc->flags & PIX_FMT_HWACCEL;
658 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
660 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
665 void avcodec_get_frame_defaults(AVFrame *frame)
667 #if LIBAVCODEC_VERSION_MAJOR >= 55
668 // extended_data should explicitly be freed when needed, this code is unsafe currently
669 // also this is not compatible to the <55 ABI/API
670 if (frame->extended_data != frame->data && 0)
671 av_freep(&frame->extended_data);
674 memset(frame, 0, sizeof(AVFrame));
679 frame->best_effort_timestamp = AV_NOPTS_VALUE;
680 frame->pkt_duration = 0;
682 frame->pkt_size = -1;
683 frame->key_frame = 1;
684 frame->sample_aspect_ratio = (AVRational) {0, 1 };
685 frame->format = -1; /* unknown */
686 frame->extended_data = frame->data;
689 AVFrame *avcodec_alloc_frame(void)
691 AVFrame *frame = av_malloc(sizeof(AVFrame));
696 frame->extended_data = NULL;
697 avcodec_get_frame_defaults(frame);
702 void avcodec_free_frame(AVFrame **frame)
706 if (!frame || !*frame)
711 if (f->extended_data != f->data)
712 av_freep(&f->extended_data);
717 #define MAKE_ACCESSORS(str, name, type, field) \
718 type av_##name##_get_##field(const str *s) { return s->field; } \
719 void av_##name##_set_##field(str *s, type v) { s->field = v; }
721 MAKE_ACCESSORS(AVFrame, frame, int64_t, best_effort_timestamp)
722 MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_duration)
723 MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_pos)
724 MAKE_ACCESSORS(AVFrame, frame, int64_t, channel_layout)
725 MAKE_ACCESSORS(AVFrame, frame, int, channels)
726 MAKE_ACCESSORS(AVFrame, frame, int, sample_rate)
727 MAKE_ACCESSORS(AVFrame, frame, AVDictionary *, metadata)
728 MAKE_ACCESSORS(AVFrame, frame, int, decode_error_flags)
729 MAKE_ACCESSORS(AVFrame, frame, int, pkt_size)
731 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
732 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
734 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
736 memset(sub, 0, sizeof(*sub));
737 sub->pts = AV_NOPTS_VALUE;
740 static int get_bit_rate(AVCodecContext *ctx)
745 switch (ctx->codec_type) {
746 case AVMEDIA_TYPE_VIDEO:
747 case AVMEDIA_TYPE_DATA:
748 case AVMEDIA_TYPE_SUBTITLE:
749 case AVMEDIA_TYPE_ATTACHMENT:
750 bit_rate = ctx->bit_rate;
752 case AVMEDIA_TYPE_AUDIO:
753 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
754 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
763 #if FF_API_AVCODEC_OPEN
764 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
766 return avcodec_open2(avctx, codec, NULL);
770 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
776 ret = avcodec_open2(avctx, codec, options);
778 ff_lock_avcodec(avctx);
782 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
785 AVDictionary *tmp = NULL;
787 if (avcodec_is_open(avctx))
790 if ((!codec && !avctx->codec)) {
791 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
792 return AVERROR(EINVAL);
794 if ((codec && avctx->codec && codec != avctx->codec)) {
795 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
796 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
797 return AVERROR(EINVAL);
800 codec = avctx->codec;
802 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
803 return AVERROR(EINVAL);
806 av_dict_copy(&tmp, *options, 0);
808 ret = ff_lock_avcodec(avctx);
812 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
813 if (!avctx->internal) {
814 ret = AVERROR(ENOMEM);
818 if (codec->priv_data_size > 0) {
819 if (!avctx->priv_data) {
820 avctx->priv_data = av_mallocz(codec->priv_data_size);
821 if (!avctx->priv_data) {
822 ret = AVERROR(ENOMEM);
825 if (codec->priv_class) {
826 *(const AVClass **)avctx->priv_data = codec->priv_class;
827 av_opt_set_defaults(avctx->priv_data);
830 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
833 avctx->priv_data = NULL;
835 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
838 //We only call avcodec_set_dimensions() for non h264 codecs so as not to overwrite previously setup dimensions
839 if (!( avctx->coded_width && avctx->coded_height && avctx->width && avctx->height && avctx->codec_id == AV_CODEC_ID_H264)){
841 if (avctx->coded_width && avctx->coded_height)
842 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
843 else if (avctx->width && avctx->height)
844 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
847 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
848 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
849 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
850 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
851 avcodec_set_dimensions(avctx, 0, 0);
854 /* if the decoder init function was already called previously,
855 * free the already allocated subtitle_header before overwriting it */
856 if (av_codec_is_decoder(codec))
857 av_freep(&avctx->subtitle_header);
859 if (avctx->channels > FF_SANE_NB_CHANNELS) {
860 ret = AVERROR(EINVAL);
864 avctx->codec = codec;
865 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
866 avctx->codec_id == AV_CODEC_ID_NONE) {
867 avctx->codec_type = codec->type;
868 avctx->codec_id = codec->id;
870 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
871 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
872 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
873 ret = AVERROR(EINVAL);
876 avctx->frame_number = 0;
877 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
879 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
880 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
881 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
883 av_log(NULL, AV_LOG_ERROR,
884 "The %s '%s' is experimental but experimental codecs are not enabled, "
885 "add '-strict %d' if you want to use it.\n",
886 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
887 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
888 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
889 av_log(NULL, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
890 codec_string, codec2->name);
891 ret = AVERROR_EXPERIMENTAL;
895 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
896 (!avctx->time_base.num || !avctx->time_base.den)) {
897 avctx->time_base.num = 1;
898 avctx->time_base.den = avctx->sample_rate;
902 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
905 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
906 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
907 ff_lock_avcodec(avctx);
912 if (HAVE_THREADS && !avctx->thread_opaque
913 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
914 ret = ff_thread_init(avctx);
919 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
920 avctx->thread_count = 1;
922 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
923 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
924 avctx->codec->max_lowres);
925 ret = AVERROR(EINVAL);
929 if (av_codec_is_encoder(avctx->codec)) {
931 if (avctx->codec->sample_fmts) {
932 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
933 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
935 if (avctx->channels == 1 &&
936 av_get_planar_sample_fmt(avctx->sample_fmt) ==
937 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
938 avctx->sample_fmt = avctx->codec->sample_fmts[i];
942 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
944 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
945 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
946 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
947 ret = AVERROR(EINVAL);
951 if (avctx->codec->pix_fmts) {
952 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
953 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
955 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
956 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
957 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
959 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
960 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
961 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
962 ret = AVERROR(EINVAL);
966 if (avctx->codec->supported_samplerates) {
967 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
968 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
970 if (avctx->codec->supported_samplerates[i] == 0) {
971 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
973 ret = AVERROR(EINVAL);
977 if (avctx->codec->channel_layouts) {
978 if (!avctx->channel_layout) {
979 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
981 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
982 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
984 if (avctx->codec->channel_layouts[i] == 0) {
986 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
987 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
988 ret = AVERROR(EINVAL);
993 if (avctx->channel_layout && avctx->channels) {
994 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
995 if (channels != avctx->channels) {
997 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
998 av_log(avctx, AV_LOG_ERROR,
999 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1000 buf, channels, avctx->channels);
1001 ret = AVERROR(EINVAL);
1004 } else if (avctx->channel_layout) {
1005 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1007 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1008 avctx->codec_id != AV_CODEC_ID_PNG // For mplayer
1010 if (avctx->width <= 0 || avctx->height <= 0) {
1011 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1012 ret = AVERROR(EINVAL);
1018 avctx->pts_correction_num_faulty_pts =
1019 avctx->pts_correction_num_faulty_dts = 0;
1020 avctx->pts_correction_last_pts =
1021 avctx->pts_correction_last_dts = INT64_MIN;
1023 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1024 || avctx->internal->frame_thread_encoder)) {
1025 ret = avctx->codec->init(avctx);
1033 if (av_codec_is_decoder(avctx->codec)) {
1034 if (!avctx->bit_rate)
1035 avctx->bit_rate = get_bit_rate(avctx);
1036 /* validate channel layout from the decoder */
1037 if (avctx->channel_layout) {
1038 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1039 if (!avctx->channels)
1040 avctx->channels = channels;
1041 else if (channels != avctx->channels) {
1043 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1044 av_log(avctx, AV_LOG_WARNING,
1045 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1046 "ignoring specified channel layout\n",
1047 buf, channels, avctx->channels);
1048 avctx->channel_layout = 0;
1051 if (avctx->channels && avctx->channels < 0 ||
1052 avctx->channels > FF_SANE_NB_CHANNELS) {
1053 ret = AVERROR(EINVAL);
1058 ff_unlock_avcodec();
1060 av_dict_free(options);
1067 av_freep(&avctx->priv_data);
1068 av_freep(&avctx->internal);
1069 avctx->codec = NULL;
1073 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int size)
1075 if (size < 0 || avpkt->size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1076 av_log(avctx, AV_LOG_ERROR, "Size %d invalid\n", size);
1077 return AVERROR(EINVAL);
1081 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1082 if (!avpkt->data || avpkt->size < size) {
1083 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1084 avpkt->data = avctx->internal->byte_buffer;
1085 avpkt->size = avctx->internal->byte_buffer_size;
1086 avpkt->destruct = NULL;
1091 void *destruct = avpkt->destruct;
1093 if (avpkt->size < size) {
1094 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %d)\n", avpkt->size, size);
1095 return AVERROR(EINVAL);
1098 av_init_packet(avpkt);
1099 avpkt->destruct = destruct;
1103 int ret = av_new_packet(avpkt, size);
1105 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %d\n", size);
1110 int ff_alloc_packet(AVPacket *avpkt, int size)
1112 return ff_alloc_packet2(NULL, avpkt, size);
1116 * Pad last frame with silence.
1118 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1120 AVFrame *frame = NULL;
1121 uint8_t *buf = NULL;
1124 if (!(frame = avcodec_alloc_frame()))
1125 return AVERROR(ENOMEM);
1128 if ((ret = av_samples_get_buffer_size(&frame->linesize[0], s->channels,
1129 s->frame_size, s->sample_fmt, 0)) < 0)
1132 if (!(buf = av_malloc(ret))) {
1133 ret = AVERROR(ENOMEM);
1137 frame->nb_samples = s->frame_size;
1138 if ((ret = avcodec_fill_audio_frame(frame, s->channels, s->sample_fmt,
1141 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1142 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1144 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1145 frame->nb_samples - src->nb_samples,
1146 s->channels, s->sample_fmt)) < 0)
1154 if (frame->extended_data != frame->data)
1155 av_freep(&frame->extended_data);
1161 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1163 const AVFrame *frame,
1164 int *got_packet_ptr)
1167 AVFrame *padded_frame = NULL;
1169 AVPacket user_pkt = *avpkt;
1170 int needs_realloc = !user_pkt.data;
1172 *got_packet_ptr = 0;
1174 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1175 av_free_packet(avpkt);
1176 av_init_packet(avpkt);
1180 /* ensure that extended_data is properly set */
1181 if (frame && !frame->extended_data) {
1182 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1183 avctx->channels > AV_NUM_DATA_POINTERS) {
1184 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1185 "with more than %d channels, but extended_data is not set.\n",
1186 AV_NUM_DATA_POINTERS);
1187 return AVERROR(EINVAL);
1189 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1192 tmp.extended_data = tmp.data;
1196 /* check for valid frame size */
1198 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1199 if (frame->nb_samples > avctx->frame_size) {
1200 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1201 return AVERROR(EINVAL);
1203 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1204 if (frame->nb_samples < avctx->frame_size &&
1205 !avctx->internal->last_audio_frame) {
1206 ret = pad_last_frame(avctx, &padded_frame, frame);
1210 frame = padded_frame;
1211 avctx->internal->last_audio_frame = 1;
1214 if (frame->nb_samples != avctx->frame_size) {
1215 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1216 ret = AVERROR(EINVAL);
1222 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1224 if (*got_packet_ptr) {
1225 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1226 if (avpkt->pts == AV_NOPTS_VALUE)
1227 avpkt->pts = frame->pts;
1228 if (!avpkt->duration)
1229 avpkt->duration = ff_samples_to_time_base(avctx,
1232 avpkt->dts = avpkt->pts;
1237 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1239 if (user_pkt.data) {
1240 if (user_pkt.size >= avpkt->size) {
1241 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1243 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1244 avpkt->size = user_pkt.size;
1247 avpkt->data = user_pkt.data;
1248 avpkt->destruct = user_pkt.destruct;
1250 if (av_dup_packet(avpkt) < 0) {
1251 ret = AVERROR(ENOMEM);
1257 if (needs_realloc && avpkt->data) {
1258 uint8_t *new_data = av_realloc(avpkt->data, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1260 avpkt->data = new_data;
1263 avctx->frame_number++;
1266 if (ret < 0 || !*got_packet_ptr) {
1267 av_free_packet(avpkt);
1268 av_init_packet(avpkt);
1272 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1273 * this needs to be moved to the encoders, but for now we can do it
1274 * here to simplify things */
1275 avpkt->flags |= AV_PKT_FLAG_KEY;
1279 av_freep(&padded_frame->data[0]);
1280 if (padded_frame->extended_data != padded_frame->data)
1281 av_freep(&padded_frame->extended_data);
1282 av_freep(&padded_frame);
1288 #if FF_API_OLD_ENCODE_AUDIO
1289 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1290 uint8_t *buf, int buf_size,
1291 const short *samples)
1294 AVFrame frame0 = { 0 };
1296 int ret, samples_size, got_packet;
1298 av_init_packet(&pkt);
1300 pkt.size = buf_size;
1304 avcodec_get_frame_defaults(frame);
1306 if (avctx->frame_size) {
1307 frame->nb_samples = avctx->frame_size;
1309 /* if frame_size is not set, the number of samples must be
1310 * calculated from the buffer size */
1312 if (!av_get_bits_per_sample(avctx->codec_id)) {
1313 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1314 "support this codec\n");
1315 return AVERROR(EINVAL);
1317 nb_samples = (int64_t)buf_size * 8 /
1318 (av_get_bits_per_sample(avctx->codec_id) *
1320 if (nb_samples >= INT_MAX)
1321 return AVERROR(EINVAL);
1322 frame->nb_samples = nb_samples;
1325 /* it is assumed that the samples buffer is large enough based on the
1326 * relevant parameters */
1327 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1329 avctx->sample_fmt, 1);
1330 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1332 (const uint8_t *)samples,
1333 samples_size, 1)) < 0)
1336 /* fabricate frame pts from sample count.
1337 * this is needed because the avcodec_encode_audio() API does not have
1338 * a way for the user to provide pts */
1339 if (avctx->sample_rate && avctx->time_base.num)
1340 frame->pts = ff_samples_to_time_base(avctx,
1341 avctx->internal->sample_count);
1343 frame->pts = AV_NOPTS_VALUE;
1344 avctx->internal->sample_count += frame->nb_samples;
1350 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1351 if (!ret && got_packet && avctx->coded_frame) {
1352 avctx->coded_frame->pts = pkt.pts;
1353 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1355 /* free any side data since we cannot return it */
1356 ff_packet_free_side_data(&pkt);
1358 if (frame && frame->extended_data != frame->data)
1359 av_freep(&frame->extended_data);
1361 return ret ? ret : pkt.size;
1366 #if FF_API_OLD_ENCODE_VIDEO
1367 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1368 const AVFrame *pict)
1371 int ret, got_packet = 0;
1373 if (buf_size < FF_MIN_BUFFER_SIZE) {
1374 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1378 av_init_packet(&pkt);
1380 pkt.size = buf_size;
1382 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1383 if (!ret && got_packet && avctx->coded_frame) {
1384 avctx->coded_frame->pts = pkt.pts;
1385 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1388 /* free any side data since we cannot return it */
1389 if (pkt.side_data_elems > 0) {
1391 for (i = 0; i < pkt.side_data_elems; i++)
1392 av_free(pkt.side_data[i].data);
1393 av_freep(&pkt.side_data);
1394 pkt.side_data_elems = 0;
1397 return ret ? ret : pkt.size;
1402 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1404 const AVFrame *frame,
1405 int *got_packet_ptr)
1408 AVPacket user_pkt = *avpkt;
1409 int needs_realloc = !user_pkt.data;
1411 *got_packet_ptr = 0;
1413 if(HAVE_THREADS && avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
1414 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1416 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
1417 avctx->stats_out[0] = '\0';
1419 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1420 av_free_packet(avpkt);
1421 av_init_packet(avpkt);
1426 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1427 return AVERROR(EINVAL);
1429 av_assert0(avctx->codec->encode2);
1431 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1432 av_assert0(ret <= 0);
1434 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1436 if (user_pkt.data) {
1437 if (user_pkt.size >= avpkt->size) {
1438 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1440 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1441 avpkt->size = user_pkt.size;
1444 avpkt->data = user_pkt.data;
1445 avpkt->destruct = user_pkt.destruct;
1447 if (av_dup_packet(avpkt) < 0) {
1448 ret = AVERROR(ENOMEM);
1454 if (!*got_packet_ptr)
1456 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1457 avpkt->pts = avpkt->dts = frame->pts;
1459 if (needs_realloc && avpkt->data &&
1460 avpkt->destruct == av_destruct_packet) {
1461 uint8_t *new_data = av_realloc(avpkt->data, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1463 avpkt->data = new_data;
1466 avctx->frame_number++;
1469 if (ret < 0 || !*got_packet_ptr)
1470 av_free_packet(avpkt);
1476 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1477 const AVSubtitle *sub)
1480 if (sub->start_display_time) {
1481 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1485 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1486 avctx->frame_number++;
1491 * Attempt to guess proper monotonic timestamps for decoded video frames
1492 * which might have incorrect times. Input timestamps may wrap around, in
1493 * which case the output will as well.
1495 * @param pts the pts field of the decoded AVPacket, as passed through
1497 * @param dts the dts field of the decoded AVPacket
1498 * @return one of the input values, may be AV_NOPTS_VALUE
1500 static int64_t guess_correct_pts(AVCodecContext *ctx,
1501 int64_t reordered_pts, int64_t dts)
1503 int64_t pts = AV_NOPTS_VALUE;
1505 if (dts != AV_NOPTS_VALUE) {
1506 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
1507 ctx->pts_correction_last_dts = dts;
1509 if (reordered_pts != AV_NOPTS_VALUE) {
1510 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
1511 ctx->pts_correction_last_pts = reordered_pts;
1513 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
1514 && reordered_pts != AV_NOPTS_VALUE)
1515 pts = reordered_pts;
1522 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1525 const uint8_t *data;
1528 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1531 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1532 if (!data || size < 4)
1534 flags = bytestream_get_le32(&data);
1536 if (size < 4) /* Required for any of the changes */
1538 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1539 avctx->channels = bytestream_get_le32(&data);
1542 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1545 avctx->channel_layout = bytestream_get_le64(&data);
1550 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1551 avctx->sample_rate = bytestream_get_le32(&data);
1554 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1557 avctx->width = bytestream_get_le32(&data);
1558 avctx->height = bytestream_get_le32(&data);
1559 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1564 static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
1567 const uint8_t *side_metadata;
1570 av_dict_free(&avctx->metadata);
1571 side_metadata = av_packet_get_side_data(avctx->pkt,
1572 AV_PKT_DATA_STRINGS_METADATA, &size);
1575 end = side_metadata + size;
1576 while (side_metadata < end) {
1577 const uint8_t *key = side_metadata;
1578 const uint8_t *val = side_metadata + strlen(key) + 1;
1579 int ret = av_dict_set(&frame->metadata, key, val, 0);
1582 side_metadata = val + strlen(val) + 1;
1585 avctx->metadata = frame->metadata;
1589 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1590 int *got_picture_ptr,
1591 const AVPacket *avpkt)
1594 // copy to ensure we do not change avpkt
1595 AVPacket tmp = *avpkt;
1597 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
1598 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
1599 return AVERROR(EINVAL);
1602 *got_picture_ptr = 0;
1603 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1604 return AVERROR(EINVAL);
1606 avcodec_get_frame_defaults(picture);
1608 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1609 int did_split = av_packet_split_side_data(&tmp);
1610 apply_param_change(avctx, &tmp);
1612 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1613 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1616 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1618 picture->pkt_dts = avpkt->dts;
1620 if(!avctx->has_b_frames){
1621 picture->pkt_pos = avpkt->pos;
1623 //FIXME these should be under if(!avctx->has_b_frames)
1624 /* get_buffer is supposed to set frame parameters */
1625 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
1626 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1627 if (!picture->width) picture->width = avctx->width;
1628 if (!picture->height) picture->height = avctx->height;
1629 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
1632 add_metadata_from_side_data(avctx, picture);
1634 emms_c(); //needed to avoid an emms_c() call before every return;
1638 ff_packet_free_side_data(&tmp);
1643 if (*got_picture_ptr){
1644 avctx->frame_number++;
1645 picture->best_effort_timestamp = guess_correct_pts(avctx,
1652 /* many decoders assign whole AVFrames, thus overwriting extended_data;
1653 * make sure it's set correctly */
1654 picture->extended_data = picture->data;
1659 #if FF_API_OLD_DECODE_AUDIO
1660 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1661 int *frame_size_ptr,
1664 AVFrame frame = {0};
1665 int ret, got_frame = 0;
1667 if (avctx->get_buffer != avcodec_default_get_buffer) {
1668 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1669 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1670 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
1671 "avcodec_decode_audio4()\n");
1672 avctx->get_buffer = avcodec_default_get_buffer;
1673 avctx->release_buffer = avcodec_default_release_buffer;
1676 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
1678 if (ret >= 0 && got_frame) {
1680 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
1681 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
1683 avctx->sample_fmt, 1);
1684 if (*frame_size_ptr < data_size) {
1685 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
1686 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
1687 return AVERROR(EINVAL);
1690 memcpy(samples, frame.extended_data[0], plane_size);
1692 if (planar && avctx->channels > 1) {
1693 uint8_t *out = ((uint8_t *)samples) + plane_size;
1694 for (ch = 1; ch < avctx->channels; ch++) {
1695 memcpy(out, frame.extended_data[ch], plane_size);
1699 *frame_size_ptr = data_size;
1701 *frame_size_ptr = 0;
1708 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1711 const AVPacket *avpkt)
1713 int planar, channels;
1718 if (!avpkt->data && avpkt->size) {
1719 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1720 return AVERROR(EINVAL);
1722 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
1723 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
1724 return AVERROR(EINVAL);
1727 avcodec_get_frame_defaults(frame);
1729 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1732 // copy to ensure we do not change avpkt
1733 AVPacket tmp = *avpkt;
1734 int did_split = av_packet_split_side_data(&tmp);
1735 apply_param_change(avctx, &tmp);
1738 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
1739 if (ret >= 0 && *got_frame_ptr) {
1740 avctx->frame_number++;
1741 frame->pkt_dts = avpkt->dts;
1742 frame->best_effort_timestamp = guess_correct_pts(avctx,
1745 if (frame->format == AV_SAMPLE_FMT_NONE)
1746 frame->format = avctx->sample_fmt;
1747 if (!frame->channel_layout)
1748 frame->channel_layout = avctx->channel_layout;
1749 if (!frame->channels)
1750 frame->channels = avctx->channels;
1751 if (!frame->sample_rate)
1752 frame->sample_rate = avctx->sample_rate;
1754 add_metadata_from_side_data(avctx, frame);
1756 side= av_packet_get_side_data(avctx->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
1757 if(side && side_size>=10) {
1758 avctx->internal->skip_samples = AV_RL32(side);
1759 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
1760 avctx->internal->skip_samples);
1762 if (avctx->internal->skip_samples) {
1763 if(frame->nb_samples <= avctx->internal->skip_samples){
1765 avctx->internal->skip_samples -= frame->nb_samples;
1766 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
1767 avctx->internal->skip_samples);
1769 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
1770 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
1771 if(avctx->pkt_timebase.num && avctx->sample_rate) {
1772 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
1773 (AVRational){1, avctx->sample_rate},
1774 avctx->pkt_timebase);
1775 if(frame->pkt_pts!=AV_NOPTS_VALUE)
1776 frame->pkt_pts += diff_ts;
1777 if(frame->pkt_dts!=AV_NOPTS_VALUE)
1778 frame->pkt_dts += diff_ts;
1779 if (frame->pkt_duration >= diff_ts)
1780 frame->pkt_duration -= diff_ts;
1782 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
1784 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
1785 avctx->internal->skip_samples, frame->nb_samples);
1786 frame->nb_samples -= avctx->internal->skip_samples;
1787 avctx->internal->skip_samples = 0;
1793 ff_packet_free_side_data(&tmp);
1799 /* many decoders assign whole AVFrames, thus overwriting extended_data;
1800 * make sure it's set correctly; assume decoders that actually use
1801 * extended_data are doing it correctly */
1802 if (*got_frame_ptr) {
1803 planar = av_sample_fmt_is_planar(frame->format);
1804 channels = av_get_channel_layout_nb_channels(frame->channel_layout);
1805 if (!(planar && channels > AV_NUM_DATA_POINTERS))
1806 frame->extended_data = frame->data;
1808 frame->extended_data = NULL;
1814 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1820 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
1821 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
1822 return AVERROR(EINVAL);
1826 avcodec_get_subtitle_defaults(sub);
1829 AVPacket tmp = *avpkt;
1830 int did_split = av_packet_split_side_data(&tmp);
1831 //apply_param_change(avctx, &tmp);
1835 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
1836 sub->pts = av_rescale_q(avpkt->pts,
1837 avctx->pkt_timebase, AV_TIME_BASE_Q);
1838 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &tmp);
1842 ff_packet_free_side_data(&tmp);
1848 avctx->frame_number++;
1854 void avsubtitle_free(AVSubtitle *sub)
1858 for (i = 0; i < sub->num_rects; i++) {
1859 av_freep(&sub->rects[i]->pict.data[0]);
1860 av_freep(&sub->rects[i]->pict.data[1]);
1861 av_freep(&sub->rects[i]->pict.data[2]);
1862 av_freep(&sub->rects[i]->pict.data[3]);
1863 av_freep(&sub->rects[i]->text);
1864 av_freep(&sub->rects[i]->ass);
1865 av_freep(&sub->rects[i]);
1868 av_freep(&sub->rects);
1870 memset(sub, 0, sizeof(AVSubtitle));
1873 av_cold int ff_codec_close_recursive(AVCodecContext *avctx)
1877 ff_unlock_avcodec();
1879 ret = avcodec_close(avctx);
1881 ff_lock_avcodec(NULL);
1885 av_cold int avcodec_close(AVCodecContext *avctx)
1887 int ret = ff_lock_avcodec(avctx);
1891 if (avcodec_is_open(avctx)) {
1892 if (HAVE_THREADS && avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
1893 ff_unlock_avcodec();
1894 ff_frame_thread_encoder_free(avctx);
1895 ff_lock_avcodec(avctx);
1897 if (HAVE_THREADS && avctx->thread_opaque)
1898 ff_thread_free(avctx);
1899 if (avctx->codec && avctx->codec->close)
1900 avctx->codec->close(avctx);
1901 avcodec_default_free_buffers(avctx);
1902 avctx->coded_frame = NULL;
1903 avctx->internal->byte_buffer_size = 0;
1904 av_freep(&avctx->internal->byte_buffer);
1905 av_freep(&avctx->internal);
1906 av_dict_free(&avctx->metadata);
1909 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1910 av_opt_free(avctx->priv_data);
1912 av_freep(&avctx->priv_data);
1913 if (av_codec_is_encoder(avctx->codec))
1914 av_freep(&avctx->extradata);
1915 avctx->codec = NULL;
1916 avctx->active_thread_type = 0;
1918 ff_unlock_avcodec();
1922 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
1925 //This is for future deprecatec codec ids, its empty since
1926 //last major bump but will fill up again over time, please don't remove it
1927 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
1928 case AV_CODEC_ID_OPUS_DEPRECATED: return AV_CODEC_ID_OPUS;
1929 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
1930 default : return id;
1934 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1936 AVCodec *p, *experimental = NULL;
1938 id= remap_deprecated_codec_id(id);
1940 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1942 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1949 return experimental;
1952 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1954 return find_encdec(id, 1);
1957 AVCodec *avcodec_find_encoder_by_name(const char *name)
1964 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1971 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1973 return find_encdec(id, 0);
1976 AVCodec *avcodec_find_decoder_by_name(const char *name)
1983 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1990 const char *avcodec_get_name(enum AVCodecID id)
1992 const AVCodecDescriptor *cd;
1995 if (id == AV_CODEC_ID_NONE)
1997 cd = avcodec_descriptor_get(id);
2000 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2001 codec = avcodec_find_decoder(id);
2004 codec = avcodec_find_encoder(id);
2007 return "unknown_codec";
2010 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2012 int i, len, ret = 0;
2014 #define IS_PRINT(x) \
2015 (((x) >= '0' && (x) <= '9') || \
2016 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2017 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2019 for (i = 0; i < 4; i++) {
2020 len = snprintf(buf, buf_size,
2021 IS_PRINT(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
2023 buf_size = buf_size > len ? buf_size - len : 0;
2030 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2032 const char *codec_type;
2033 const char *codec_name;
2034 const char *profile = NULL;
2037 AVRational display_aspect_ratio;
2039 if (!buf || buf_size <= 0)
2041 codec_type = av_get_media_type_string(enc->codec_type);
2042 codec_name = avcodec_get_name(enc->codec_id);
2043 if (enc->profile != FF_PROFILE_UNKNOWN) {
2047 p = encode ? avcodec_find_encoder(enc->codec_id) :
2048 avcodec_find_decoder(enc->codec_id);
2050 profile = av_get_profile_name(p, enc->profile);
2053 snprintf(buf, buf_size, "%s: %s%s", codec_type ? codec_type : "unknown",
2054 codec_name, enc->mb_decision ? " (hq)" : "");
2055 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2057 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
2058 if (enc->codec_tag) {
2060 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2061 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2062 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
2065 switch (enc->codec_type) {
2066 case AVMEDIA_TYPE_VIDEO:
2067 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
2068 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2070 av_get_pix_fmt_name(enc->pix_fmt));
2071 if (enc->bits_per_raw_sample &&
2072 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
2073 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2074 " (%d bpc)", enc->bits_per_raw_sample);
2077 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2079 enc->width, enc->height);
2080 if (enc->sample_aspect_ratio.num) {
2081 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2082 enc->width * enc->sample_aspect_ratio.num,
2083 enc->height * enc->sample_aspect_ratio.den,
2085 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2086 " [SAR %d:%d DAR %d:%d]",
2087 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2088 display_aspect_ratio.num, display_aspect_ratio.den);
2090 if (av_log_get_level() >= AV_LOG_DEBUG) {
2091 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2092 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2094 enc->time_base.num / g, enc->time_base.den / g);
2098 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2099 ", q=%d-%d", enc->qmin, enc->qmax);
2102 case AVMEDIA_TYPE_AUDIO:
2103 if (enc->sample_rate) {
2104 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2105 ", %d Hz", enc->sample_rate);
2107 av_strlcat(buf, ", ", buf_size);
2108 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2109 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2110 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2111 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2118 if (enc->flags & CODEC_FLAG_PASS1)
2119 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2121 if (enc->flags & CODEC_FLAG_PASS2)
2122 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2125 bitrate = get_bit_rate(enc);
2127 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2128 ", %d kb/s", bitrate / 1000);
2132 const char *av_get_profile_name(const AVCodec *codec, int profile)
2135 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
2138 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2139 if (p->profile == profile)
2145 unsigned avcodec_version(void)
2147 // av_assert0(AV_CODEC_ID_V410==164);
2148 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
2149 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
2150 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
2151 av_assert0(AV_CODEC_ID_SRT==94216);
2152 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
2154 return LIBAVCODEC_VERSION_INT;
2157 const char *avcodec_configuration(void)
2159 return FFMPEG_CONFIGURATION;
2162 const char *avcodec_license(void)
2164 #define LICENSE_PREFIX "libavcodec license: "
2165 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
2168 void avcodec_flush_buffers(AVCodecContext *avctx)
2170 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2171 ff_thread_flush(avctx);
2172 else if (avctx->codec->flush)
2173 avctx->codec->flush(avctx);
2175 avctx->pts_correction_last_pts =
2176 avctx->pts_correction_last_dts = INT64_MIN;
2179 static void video_free_buffers(AVCodecContext *s)
2181 AVCodecInternal *avci = s->internal;
2187 if (avci->buffer_count)
2188 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
2189 avci->buffer_count);
2190 for (i = 0; i < INTERNAL_BUFFER_SIZE; i++) {
2191 InternalBuffer *buf = &avci->buffer[i];
2192 for (j = 0; j < 4; j++) {
2193 av_freep(&buf->base[j]);
2194 buf->data[j] = NULL;
2197 av_freep(&avci->buffer);
2199 avci->buffer_count = 0;
2202 static void audio_free_buffers(AVCodecContext *avctx)
2204 AVCodecInternal *avci = avctx->internal;
2205 av_freep(&avci->audio_data);
2208 void avcodec_default_free_buffers(AVCodecContext *avctx)
2210 switch (avctx->codec_type) {
2211 case AVMEDIA_TYPE_VIDEO:
2212 video_free_buffers(avctx);
2214 case AVMEDIA_TYPE_AUDIO:
2215 audio_free_buffers(avctx);
2222 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
2225 case AV_CODEC_ID_8SVX_EXP:
2226 case AV_CODEC_ID_8SVX_FIB:
2227 case AV_CODEC_ID_ADPCM_CT:
2228 case AV_CODEC_ID_ADPCM_IMA_APC:
2229 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
2230 case AV_CODEC_ID_ADPCM_IMA_OKI:
2231 case AV_CODEC_ID_ADPCM_IMA_WS:
2232 case AV_CODEC_ID_ADPCM_G722:
2233 case AV_CODEC_ID_ADPCM_YAMAHA:
2235 case AV_CODEC_ID_PCM_ALAW:
2236 case AV_CODEC_ID_PCM_MULAW:
2237 case AV_CODEC_ID_PCM_S8:
2238 case AV_CODEC_ID_PCM_S8_PLANAR:
2239 case AV_CODEC_ID_PCM_U8:
2240 case AV_CODEC_ID_PCM_ZORK:
2242 case AV_CODEC_ID_PCM_S16BE:
2243 case AV_CODEC_ID_PCM_S16BE_PLANAR:
2244 case AV_CODEC_ID_PCM_S16LE:
2245 case AV_CODEC_ID_PCM_S16LE_PLANAR:
2246 case AV_CODEC_ID_PCM_U16BE:
2247 case AV_CODEC_ID_PCM_U16LE:
2249 case AV_CODEC_ID_PCM_S24DAUD:
2250 case AV_CODEC_ID_PCM_S24BE:
2251 case AV_CODEC_ID_PCM_S24LE:
2252 case AV_CODEC_ID_PCM_S24LE_PLANAR:
2253 case AV_CODEC_ID_PCM_U24BE:
2254 case AV_CODEC_ID_PCM_U24LE:
2256 case AV_CODEC_ID_PCM_S32BE:
2257 case AV_CODEC_ID_PCM_S32LE:
2258 case AV_CODEC_ID_PCM_S32LE_PLANAR:
2259 case AV_CODEC_ID_PCM_U32BE:
2260 case AV_CODEC_ID_PCM_U32LE:
2261 case AV_CODEC_ID_PCM_F32BE:
2262 case AV_CODEC_ID_PCM_F32LE:
2264 case AV_CODEC_ID_PCM_F64BE:
2265 case AV_CODEC_ID_PCM_F64LE:
2272 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
2274 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
2275 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2276 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2277 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2278 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2279 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2280 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2281 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2282 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2283 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2284 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2286 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
2287 return AV_CODEC_ID_NONE;
2288 if (be < 0 || be > 1)
2290 return map[fmt][be];
2293 int av_get_bits_per_sample(enum AVCodecID codec_id)
2296 case AV_CODEC_ID_ADPCM_SBPRO_2:
2298 case AV_CODEC_ID_ADPCM_SBPRO_3:
2300 case AV_CODEC_ID_ADPCM_SBPRO_4:
2301 case AV_CODEC_ID_ADPCM_IMA_WAV:
2302 case AV_CODEC_ID_ADPCM_IMA_QT:
2303 case AV_CODEC_ID_ADPCM_SWF:
2304 case AV_CODEC_ID_ADPCM_MS:
2307 return av_get_exact_bits_per_sample(codec_id);
2311 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2313 int id, sr, ch, ba, tag, bps;
2315 id = avctx->codec_id;
2316 sr = avctx->sample_rate;
2317 ch = avctx->channels;
2318 ba = avctx->block_align;
2319 tag = avctx->codec_tag;
2320 bps = av_get_exact_bits_per_sample(avctx->codec_id);
2322 /* codecs with an exact constant bits per sample */
2323 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
2324 return (frame_bytes * 8LL) / (bps * ch);
2325 bps = avctx->bits_per_coded_sample;
2327 /* codecs with a fixed packet duration */
2329 case AV_CODEC_ID_ADPCM_ADX: return 32;
2330 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
2331 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
2332 case AV_CODEC_ID_AMR_NB:
2333 case AV_CODEC_ID_GSM:
2334 case AV_CODEC_ID_QCELP:
2335 case AV_CODEC_ID_RA_288: return 160;
2336 case AV_CODEC_ID_AMR_WB:
2337 case AV_CODEC_ID_GSM_MS: return 320;
2338 case AV_CODEC_ID_MP1: return 384;
2339 case AV_CODEC_ID_ATRAC1: return 512;
2340 case AV_CODEC_ID_ATRAC3: return 1024;
2341 case AV_CODEC_ID_MP2:
2342 case AV_CODEC_ID_MUSEPACK7: return 1152;
2343 case AV_CODEC_ID_AC3: return 1536;
2347 /* calc from sample rate */
2348 if (id == AV_CODEC_ID_TTA)
2349 return 256 * sr / 245;
2352 /* calc from sample rate and channels */
2353 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
2354 return (480 << (sr / 22050)) / ch;
2359 /* calc from block_align */
2360 if (id == AV_CODEC_ID_SIPR) {
2362 case 20: return 160;
2363 case 19: return 144;
2364 case 29: return 288;
2365 case 37: return 480;
2367 } else if (id == AV_CODEC_ID_ILBC) {
2369 case 38: return 160;
2370 case 50: return 240;
2375 if (frame_bytes > 0) {
2376 /* calc from frame_bytes only */
2377 if (id == AV_CODEC_ID_TRUESPEECH)
2378 return 240 * (frame_bytes / 32);
2379 if (id == AV_CODEC_ID_NELLYMOSER)
2380 return 256 * (frame_bytes / 64);
2381 if (id == AV_CODEC_ID_RA_144)
2382 return 160 * (frame_bytes / 20);
2383 if (id == AV_CODEC_ID_G723_1)
2384 return 240 * (frame_bytes / 24);
2387 /* calc from frame_bytes and bits_per_coded_sample */
2388 if (id == AV_CODEC_ID_ADPCM_G726)
2389 return frame_bytes * 8 / bps;
2393 /* calc from frame_bytes and channels */
2395 case AV_CODEC_ID_ADPCM_AFC:
2396 return frame_bytes / (9 * ch) * 16;
2397 case AV_CODEC_ID_ADPCM_4XM:
2398 case AV_CODEC_ID_ADPCM_IMA_ISS:
2399 return (frame_bytes - 4 * ch) * 2 / ch;
2400 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
2401 return (frame_bytes - 4) * 2 / ch;
2402 case AV_CODEC_ID_ADPCM_IMA_AMV:
2403 return (frame_bytes - 8) * 2 / ch;
2404 case AV_CODEC_ID_ADPCM_XA:
2405 return (frame_bytes / 128) * 224 / ch;
2406 case AV_CODEC_ID_INTERPLAY_DPCM:
2407 return (frame_bytes - 6 - ch) / ch;
2408 case AV_CODEC_ID_ROQ_DPCM:
2409 return (frame_bytes - 8) / ch;
2410 case AV_CODEC_ID_XAN_DPCM:
2411 return (frame_bytes - 2 * ch) / ch;
2412 case AV_CODEC_ID_MACE3:
2413 return 3 * frame_bytes / ch;
2414 case AV_CODEC_ID_MACE6:
2415 return 6 * frame_bytes / ch;
2416 case AV_CODEC_ID_PCM_LXF:
2417 return 2 * (frame_bytes / (5 * ch));
2418 case AV_CODEC_ID_IAC:
2419 case AV_CODEC_ID_IMC:
2420 return 4 * frame_bytes / ch;
2424 /* calc from frame_bytes, channels, and codec_tag */
2425 if (id == AV_CODEC_ID_SOL_DPCM) {
2427 return frame_bytes / ch;
2429 return frame_bytes * 2 / ch;
2434 /* calc from frame_bytes, channels, and block_align */
2435 int blocks = frame_bytes / ba;
2436 switch (avctx->codec_id) {
2437 case AV_CODEC_ID_ADPCM_IMA_WAV:
2438 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2439 case AV_CODEC_ID_ADPCM_IMA_DK3:
2440 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2441 case AV_CODEC_ID_ADPCM_IMA_DK4:
2442 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2443 case AV_CODEC_ID_ADPCM_MS:
2444 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2449 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2450 switch (avctx->codec_id) {
2451 case AV_CODEC_ID_PCM_DVD:
2454 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2455 case AV_CODEC_ID_PCM_BLURAY:
2458 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2459 case AV_CODEC_ID_S302M:
2460 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2470 int ff_thread_init(AVCodecContext *s)
2477 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2491 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2494 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2498 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2500 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
2501 "version to the newest one from Git. If the problem still "
2502 "occurs, it means that your file has a feature which has not "
2503 "been implemented.\n", feature);
2505 av_log_ask_for_sample(avc, NULL);
2508 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2510 va_list argument_list;
2512 va_start(argument_list, msg);
2515 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2516 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2517 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
2518 "and contact the ffmpeg-devel mailing list.\n");
2520 va_end(argument_list);
2523 static AVHWAccel *first_hwaccel = NULL;
2525 void av_register_hwaccel(AVHWAccel *hwaccel)
2527 AVHWAccel **p = &first_hwaccel;
2531 hwaccel->next = NULL;
2534 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2536 return hwaccel ? hwaccel->next : first_hwaccel;
2539 AVHWAccel *ff_find_hwaccel(enum AVCodecID codec_id, enum AVPixelFormat pix_fmt)
2541 AVHWAccel *hwaccel = NULL;
2543 while ((hwaccel = av_hwaccel_next(hwaccel)))
2544 if (hwaccel->id == codec_id
2545 && hwaccel->pix_fmt == pix_fmt)
2550 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2552 if (ff_lockmgr_cb) {
2553 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2555 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2561 if (ff_lockmgr_cb) {
2562 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2564 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2570 int ff_lock_avcodec(AVCodecContext *log_ctx)
2572 if (ff_lockmgr_cb) {
2573 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
2576 entangled_thread_counter++;
2577 if (entangled_thread_counter != 1) {
2578 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
2579 ff_avcodec_locked = 1;
2580 ff_unlock_avcodec();
2581 return AVERROR(EINVAL);
2583 av_assert0(!ff_avcodec_locked);
2584 ff_avcodec_locked = 1;
2588 int ff_unlock_avcodec(void)
2590 av_assert0(ff_avcodec_locked);
2591 ff_avcodec_locked = 0;
2592 entangled_thread_counter--;
2593 if (ff_lockmgr_cb) {
2594 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
2600 int avpriv_lock_avformat(void)
2602 if (ff_lockmgr_cb) {
2603 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2609 int avpriv_unlock_avformat(void)
2611 if (ff_lockmgr_cb) {
2612 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2618 unsigned int avpriv_toupper4(unsigned int x)
2620 return toupper(x & 0xFF)
2621 + (toupper((x >> 8) & 0xFF) << 8)
2622 + (toupper((x >> 16) & 0xFF) << 16)
2623 + (toupper((x >> 24) & 0xFF) << 24);
2628 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
2632 return ff_get_buffer(avctx, f);
2635 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
2637 f->owner->release_buffer(f->owner, f);
2640 void ff_thread_finish_setup(AVCodecContext *avctx)
2644 void ff_thread_report_progress(AVFrame *f, int progress, int field)
2648 void ff_thread_await_progress(AVFrame *f, int progress, int field)
2652 int ff_thread_can_start_frame(AVCodecContext *avctx)
2659 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
2661 AVCodec *c= avcodec_find_decoder(codec_id);
2663 c= avcodec_find_encoder(codec_id);
2667 if (codec_id <= AV_CODEC_ID_NONE)
2668 return AVMEDIA_TYPE_UNKNOWN;
2669 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
2670 return AVMEDIA_TYPE_VIDEO;
2671 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
2672 return AVMEDIA_TYPE_AUDIO;
2673 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
2674 return AVMEDIA_TYPE_SUBTITLE;
2676 return AVMEDIA_TYPE_UNKNOWN;
2679 int avcodec_is_open(AVCodecContext *s)
2681 return !!s->internal;